Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Chip Model | PCA9685A |
| Channel Count | 16 Independent Channels |
| Interface Protocol | I2C (Inter-Integrated Circuit) |
| PWM Frequency Range | 24 Hz to 1526 Hz |
| Operating Voltage | 3.3V to 5V Logic, up to 6V Servo Power |
| Addressable Units | Up to 62 boards on one bus |
| Resolution | 12-bit (4096 steps) |
| Connector Type | Standard 3-pin Header (GND, VCC, Signal) |
| Board Dimensions | 66mm x 26mm x 14mm |
| Compatibility | Arduino, Raspberry Pi, ESP32, STM32 |
Anonymous
Mar 29, 2026
Rating: 4/5
Great value but needs careful wiring
The module functions exactly as described. Just make sure to separate the logic power from the servo power if you are driving high-torque motors to avoid resetting your microcontroller.
Anonymous
Mar 14, 2026
Rating: 5/5
Bought five for our classroom
We use these for teaching PWM control concepts. They are durable enough to handle student errors and provide consistent performance across all units we purchased.
Anonymous
Mar 13, 2026
Rating: 4/5
Solid performer
Works well for LED dimming applications too, not just servos. The only minor issue is that the header pins were slightly loose on one unit, but easy to solder tight.
Anonymous
Mar 07, 2026
Rating: 5/5
Easy library support
Plug and play with the standard Adafruit library. Setup took less than 10 minutes. The build quality is solid with clear silkscreen markings for all pins.
Anonymous
Mar 07, 2026
Rating: 5/5
Reliable industrial prototype component
Used this in a prototype for an automated gate system. The precision of the 12-bit resolution allows for very smooth movement. No overheating issues after continuous operation.
Anonymous
Mar 03, 2026
Rating: 5/5
Perfect for hexapod robots
This board works flawlessly with my Arduino project. The I2C communication is stable, and controlling 16 servos simultaneously caused no lag. Highly recommended for robotics enthusiasts.
Q: Can I stack multiple boards together to control more than 16 servos?
A: Yes, you can stack up to 62 boards on a single I2C bus by changing the address jumpers on each board, allowing you to control nearly 1000 servos with one microcontroller.
Q: What is the maximum current per channel?
A: Each channel can typically handle up to 25mA. For high-current servos, you should power the servos from an external 5V/6V source while using the board only for signal control.
Q: Is it compatible with 3.3V logic microcontrollers like the ESP32?
A: Absolutely. The PCA9685A operates seamlessly with both 3.3V and 5V logic levels, making it fully compatible with ESP32, Raspberry Pi, and standard Arduino boards.
Q: Do you provide sample code for Raspberry Pi Python users?
A: Yes, we provide links to GitHub repositories containing Python libraries and example scripts specifically tailored for Raspberry Pi GPIO usage in the product documentation section.
Q: Does this board come with screw terminals for power input?
A: This specific model features 3-pin headers for connection. However, there are solder pads on the back if you wish to attach screw terminals manually for more secure power connections.
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